It will be such a kindness if you say something to her about her drinking. It is a difficult conversation to have, and that is why so many people just walk the other way.
Tell her if she stops drinking, she won't be losing alcohol. She will be gaining a new and beautiful life. So many problems, even those she does not think are caused by alcohol, will go away.
I know this firsthand, and it is a promise.
Tell her to read "Alcohol Lied to Me" by Craig Beck. If she believes what she reads 100%, it will be life changing.